Concrete-form.



QESTAVAH' H. 0. DAVIDSON & W. P. CUNNINGHAM.

coNcREiE FORM. APPLICATION FILED MAR. I4| I9I7-- Patented Dec. 4, 1917.

d-EZST AVAHABLE COP amen srarns PATENT orruou.v

HARRY o. DAVIDSON AND WILLIAM CUNNINGHAM, OF CLEVELAND, OHIO.

CONCRETE-FORM.

Application filed March 14, 19 7. Serial No. 154,684.

zens of the United States, residing at Gleveland, in the county ofCuyahoga and State of Ohio, have invented a certain new and use fulImprovement in Concrete-Forms, ofwhich the following is a full, clear,and

exact description, reference being had tothe accompanying drawings. 1

-This invention relates to concreteforms,

and more particularly to a device for clampgirders of a building frameorstructure'.

, The-objects ofthe invention are the provision of a device of theaforesaid character which-=may be 'readily- :connected to the fiangesofan I beam or the like, for suspension therebeneath, and adjustable tofit beams of varying widths within reasonable limits; which involves aclamping element forcoiiperation with the edge portions of sadjoiningform plates for holding them in firm contact with the beam and serving,at thesame time, to draw the plates into proper position with respect to'the sides of the beam; which includes means, positive of action yetvery convenient of manipulation,

for moving the clamping element relative to thehanger, and which meansis durable, is not easy to get out of order, and serves to lock theparts in clamping position; the

provision of a device of the above character wherein the elements arepermanently connected, thus avoiding the possibility of loss of parts;and. which can be quickly and easily removed from the beam.

In the drawing accompanying and forming a part hereof we have shown ourinvention incorporated in what are known as dome celling formsassociated with the horizontal beams of a structural steel frame.

Figure 1 is a fragmentary vertical section through the structure on aplane transverse the ceiling beams and shows our improved form in place;Fig. 2 is a section on the line 22 of Fig. 1, looking in the directionof the arrows; Fig. 3 is an. enlarged sectional detail through one ofthe clamping devices and the adjacent parts of the form plates and Ibeam: and Fig. .tShOWS the various elements of the clamping device inseparated condition.

Specification of Letters Patent.

reference characters, 1 represents the I beamsof a structural steelframe tothe underneath surface of which are clamped, by theuse .of ourimproved clamping dev1ces,-the.edge.-portions of the form plates 2, theplates being .s hown'herein as of a shape to-produce the soacalled domeceiling effect. Attention is called to the for-" Patented Dec. 4, 1917.

mat'ion ofzthe edge-portions of the .plates where the platescurvedownward substantially in'contact with. the'edg esof the I beam flangesandatheir eirtend hori'zontally therebeneath toward the7centeri ofthebeam, as shown at 3, where their extreme edge p( r-' tions are theninclined downward and mward, as. shown at 4:. V

At suitable distances along their edges,-

the'plates are 'providedwith notches 5 for the passage-of the hookedends 10 and opposed hookedlfingers 10 of the hangers 11.

Each hanger comprises two metal straps 12 that have'their lower endsconnected by a ring 15 and extend upward alongside each other to a pointbelow the plane :of the edge portions 4 ofthe form plates, where theyare turned outward in opposite directions beneath such edge portions andthen upward beneath the side edges of the beam, the one terminating inthe previously mentioned hooked'finger 10,-and the other beingperforated for the reception of a bolt 16 by means of which, and thethumb nut '17, the

hooked finger 10 is clamped to the upturned end of the adjacent strap12. Just below their horizontal portions the straps are provided withalining holes for the passage of the bolt 18, having applied to it thenut 19, and through which the straps may be adjusted toward and fromeach other to fit beams of various widths.

A U-shaped clamping element 20, which is shown as made of sheet metaland of channel formation in cross section, has the web of its centralportion provided with an opening 21 through which the vertical portionsof the straps 12 pass, while the webs of its side branches are notcheddownward from their upper ends at 22 for the passage of the upper endsof the straps. The upper ends of the clamping element are are arrangedfor contact with the portions 3 of the form plates, .and the corners ofthe side distributed, along the t-I beams according; to

the location ofrthe notches. 5 of the plates? and; are attached @byplacing the :hooked I fin gerslO eOVBI' one flange. and thenlooseningthe thumb,- iIllltS -17 until the hooked fingers;

10fs--mayr-be' swung-over the other; after Whiclrthe nuts-1,7 may be.tightenedlto-clamp; theifingers against-the adjacent pants ofathestraps 12-, it beingiunderstoodthat thenhangliters-are adjusted-throughthe boltsas18 tosnugly: fit the ,I beami: With itheter gesof the plateswithin the embrace of the dial 11p? men a 1 1the;-- wedges 26 are. for5d- 0n dIiVGIluiIltO; the; openings 5 25.1 to-;= elevate ,the a Iclamping elements. The cornersioii theQside flanges. of -theclampingelements engage the inclinedeedge portions 54 of r the platesandi draw #them -;together.- to bring .=the;.-ad.jacents anglesr-of: the:plates into. close; proximity to -01: iniengagement with the opposed:edges of.

the I beam zthe ends oi the c'lainping 'elaments finallyenga-gingtheportions-B of the-i plates and holding themin firmicontactwitht thebeam; When it is desiredzto remove the plates thdwedges 26 are driven ina direc tiOIliztOiflOWGI. the clamping;elernents=;;and= the-hangerscinayl be 1 removed-5 by .-=loosening the -.nut :17 and:disengaging the '1 hooks 'fin-.-.'

ger 103 and after that the hook finger; 10,

I from --the beam. Atrthe=rightwhand;sidezof 1 Fig; 1 and:the-left'hand' side :of Fig.1 the clampsnare: -shown= as loosened, whilethe I otheraclamps of; the respectiveviews arewshow-n-in=eflectivemonditions Having wthus describe'dwour invention,what we claim is 1. Apparatusdesigned for use withrbeams having opposedsupportingnportions, said apparatus comprising r'a hanger having hooks!for engagementa :Wlth' said supporting portions, a form plate forengagement 'witl'i the; face of the beam, a clamping element movablewitl'r respect to the hangers for en'- gagement-With the plate, andmeans: :carried:

by: the hanger-for sormoving said 1 elementw c 2.- ,iApparatus-designed:for use with beams havingigopposed supporting .portions, said"apparatus: icomprising a hanger rhawingw hooks efor'engaging said:supporting POI"-;: tions a plate-applied to the: face of the beam and)cut.- away ;fOI-.'1i3h6. fiCCOHJD'lQdfLtlQIl- Offlthen aha hanger, aclamping element movable on the hanger. into contact with the plate, andmeans carried by the hangeiyfor so,. moving said element 3. ripparatusdesigned for use with beams having opposed supporting portions, saidapparatus comprising a hanger having parts for engagement with saidsupporting portionsthereby to suspend the hanger below a beam, a platefor application to the" under 7 side-0t the .beam,-.:;a. clampingelement movable with respect to the hanger into contact with the plate,thehanger:- having-an abut-x mentxspaced from a portiomof said element,and a wedges :insertible-i- (between sa-idi (abut-a8 0 mentand;thezclampingaelementi v a r .4. .Ap'paratusdesi-gned zfiorz useswith beams;

having ."opposed supporting:eportions; said i apparatus compris-in g ahangerihavin'gi parts for =enga gement'a withi said 'su pp'ortin'g ipon2, tionsthereby to; suspend) the .hanger;-=beloww a beam, opposedplates. havingoedgeflportins: for i611 'gagementgwith: the und'ersideiofi rthe beam,-;a clamping elementimovable with? re-x: spect i to 1the-i ihangeri into contact With 'ltl1 9 o edge portions of-rthesplatesgand-xiheansreanried i by; the hanger-J for. so: moving: saidnelement aI.

Apparatus designed-for use withlbeamsfihaving .opposedwsupporting'portions, ".said 9t apparatus comprisingia hanger havingipa'ntsi forengagement with-said supporting portions; thereby tozsuspend theehangenbelown beamgii opposed plateschaving portionsa'formngagef inentwith; the ainderneathu SUIf3CGiIDf thQUIUO beam 1 adjacent r each sidethereof and havin'g edge 4 portions:=.-whichconvergeeedowmvard fi fromthe beam, a clamping; elemnirmovablefi with respect to: the :hangertopresent parts thereof inter-engagement with the edge and f' 5 a dj-acentportions :of :said plates, and meansi carried rby 3 the -hanger .fors0 1moving' the clampingelements;

6. rADDar-atus designed for use withvbeamshaving opposed a supportingportions; -said- 1 1 6 apparatus: comprising-a h angerhaving partsforengagement: with said supporting 'or tions thereby P to suspend I thehangen below a beam, opposed plates-liming portions don"- engagementwith theunderneathsurfa'oe of the'cbeam, the adjacent edges whereof CODverge downwardly -from' the beam, a -U- shaped clamping element movable=vertically of'the *ha'ngen to engage itsends with the adjacent portionsand edgesof thewifore- 1 said plates, the :hangerhaving an abutmentop'posedtothebottom of the c-lamping element, and:a wedge insert-iblebetweentheabutment and the bottom of said 'elei'nent'.

7. "Apparatus designed for-usewith beams having opposedsupportingportions, said apparatus comprising a hanger having parts forengagementwith said supporting por tions thereby to suspend the hangerbelow a beam, opposed plates extending ydownwarrl BE-T'A-VAELABLECOP-along and then beneath each side of the beam, the adjacentedges of theopposedplates converging downward from the beam, the plates beingnotched for the accommodation of the hanger, a U-shaped clamping elementcarried by the hanger the ends whereof are arranged to engage the edgesof the plates, the hanger having a wedge receiving opening below theclamping element, and a wedge within said opening.

8. Apparatus designed for use with beams having opposed supportingportions, said apparatus consisting of a hanger comprising straps havingtheir lower ends connected and extending upward alongside each other andthen outward in opposite directions beneath the beam with their upper ns provided with hooks for engagement h he aforesaid supporting portionsof a pp sed plates having portions extending beneath the opposite sidesof the beam, the adjacent edges whereof verge downwardly from the bowplates being notched for the ac" tion of the hanger, a U-shaped elementhaving a central aperture passage of the lower portion oi hanger andhaving notches in its op branches for the passage of the outtinnedportions of the hanger, the ends of the member being arranged forengagement with the adjacent portions of the opposed plates, the

hanger being provided with a wedge receivingopening in the vicinity ofthe central portion of the clamping element, and a wedge within saidopening.

9 Apparatus designed for use with beams having opposed supportingportions, said apparatus consisting of a hanger comprising straps havingtheir lower ends connected and extending upward alongside each other andthen outward in opposite directions beneath the beam with their upperends provided with hooks for engagement with the aforesaid supportingportions of a beam, means adjustably connecting the upper ends of thestraps, opposed plates having portions extending beneath the oppositesides of the beam, the adjacent edges whereof converge downwardly fromthe beam, the plates being notched for the accommodation of the hanger,a U-shaped clamping element having a central aperture for the passage ofthe lower portion of the hanger and having notches in its opposedbranches for the passage of the outturned portions of the hanger, theends of the member being arranged for engagement with the adjacentportions of the opposed plates, the hanger being provided with a wedgereceiving opening in the vicinity of the central portion of the clampingelement, and a wedge within said opening.

10. Apparatus designed for use with beams having opposed supportingportions,

surface thereof, a clamping element mov-' said apparatus consisting of ahanger having ahorizontal portion adapted to extend transversely beneaththe "beam one end whereof is turned upward and inward over one of theaforesaid supporting portions of a beam, a hooked finger movablyconnected tothe opposite end of the horizontal portion, a form plateextending beneath the beam for engagement with the underneath.

able with respect to the hanger into contact with the plate, and meanscarried by the hanger for so moving said element.

11. Apparatus designed for use with beams having opposed supportingportions, said apparatus consisting of a hanger having a portion that isarranged to extend substantially horizontally beneath the beam the endswhereof are provided with hooks for engagement with the aforesaidsupportlng eta beam, the hanger having a vertion depending fromsubstantially r of the horizontal portion, opttes having portionsextending besides of the beam the adjacent reof converge downwardly a U-clamping element of channel orma- -Jn 1n cross section having a centralaper ture for the reception of the central portion of the hanger andhaving the webs of its vertical branches notched downward from theirupper ends for the passage of the horizontal portion of the hanger, theaforesaid plates being notched for the accommodation of the hanger andarranged for engagement by the ends of the clamping element, and meansfor moving the clamping element upward along the vertical portion of thehanger.

12. Apparatus designed for: use with beams having opposed supportingportions,v

said apparatus comprising a hanger having a portion that is arranged toextend substantially horizontally beneath the beam the ends whereof areprovided with hooks for engagement with the aforesaid supportingportions of a beam, the hanger having a vertical portion depending fromsubstantially the center of the horizontal portion, opposed plateshaving portions extending beneath the sides of the beam, the adjacentedges whereof converge downwardly, a U- shaped clamping element ofchannel formation in cross section having a central aperture for thereception of the central portion of the hanger and having the webs ofits vertical branches notched downward from their upper ends for thepassage of the horizontal portions of the hanger, the aforesaid platesbeing notched for the accommodation of the hanger and arranged forengagement by the ends of the clamping element, the inner corners of theends of th clamping element being beveled to correspond substantially tothe convergence of 6E5? AVAiLABLE' CUP the edgexporfiions 0f thep1atesand means a clamping element movabl with respectto fo r mciving Stheclampingelement upward the'ha nger for engagement with the 'p1ate,'==10along thewertical portion'of *the hangers nndmeuns'carrid by thehange'rfor so'mov l3.-"Appa'ra tlis' designed for 'use 'With '21 ingsaidelement;

bean1;"said apparatuscomprisinga hanger In testimony" whereof;a-hereunto affiy ha vingn, parfifor' attachmentto said beam oursignatures. thereby-f--t-0'*suspnd the hanger below 'the' HARRY O.DAVIDSGN:v beam, a plate "forengagementwiththe beam; XVILLIAM 'P.CUNNINGHAM:

Gupieswf*this gatent'zhay be--obtained fo1"five cents-c5011, by addressin'g the Commi'ssio'iier-qf 'iaibntiw 'washingtonyD. C. I

